| Flat 1, Sidlaw House, Portland Avenue, London | - | 57 m² | - |
| Flat 3, Sidlaw House, Portland Avenue, London | - | 61 m² | - |
| Flat 4, Sidlaw House, Portland Avenue, London | - | 47 m² | - |
| Flat 5 Sidlaw House, Portland Avenue, London | - | 39 m² | - |
| Flat 6, Sidlaw House, Portland Avenue, London | - | 75 m² | - |
| Flat 7, Sidlaw House, Portland Avenue, London | - | 53 m² | - |
| Flat 8, Sidlaw House, Portland Avenue, London | - | 56 m² | - |
| Flat 9, Sidlaw House, Portland Avenue, London | - | 45 m² | - |
| Flat 10 Sidlaw House, Portland Avenue, London | - | 50 m² | - |
| Flat 11, Sidlaw House, Portland Avenue, London | - | 50 m² | - |
| Flat 12, Sidlaw House, Portland Avenue, London | - | 43 m² | - |
| Flat 13, Sidlaw House, Portland Avenue, London | - | 48 m² | - |
| Flat 14 Sidlaw House, Portland Avenue, London | - | 66 m² | - |
| Flat 15 Sidlaw House, Portland Avenue, London | - | 40 m² | - |
| Flat 16 Sidlaw House, Portland Avenue, London | - | 51 m² | - |
| Flat 17, Sidlaw House, Portland Avenue, London | Leasehold | 52 m² | £44,693 (2002) |
| Flat 18 Sidlaw House, Portland Avenue, London | Leasehold | 61 m² | £245,000 (2014) |
| Flat 19 Sidlaw House, Portland Avenue, London | - | 56 m² | - |
| Flat 20, Sidlaw House, Portland Avenue, London | - | 41 m² | - |
| Flat 21, Sidlaw House, Portland Avenue, London | - | 40 m² | - |
| Flat 25 Sidlaw House, Portland Avenue, London | - | 70 m² | - |
| Flat 27, Sidlaw House, Portland Avenue, London | - | 79 m² | - |
| Flat 28 Sidlaw House, Portland Avenue, London | - | 57 m² | - |
| Flat 29 Sidlaw House, Portland Avenue, London | - | 66 m² | - |
| Flat 30 Sidlaw House, Portland Avenue, London | - | 68 m² | - |
| Flat 32 Sidlaw House, Portland Avenue, London | - | 47 m² | - |
| Flat 34 Sidlaw House, Portland Avenue, London | - | 55 m² | - |
| Flat 35, Sidlaw House, Portland Avenue, London | Leasehold | 67 m² | £442,000 (2022) |
| Flat 36 Sidlaw House, Portland Avenue, London | Leasehold | 69 m² | £435,000 (2018) |
| Flat 37 Sidlaw House, Portland Avenue, London | - | 53 m² | - |
| Flat 39 Sidlaw House, Portland Avenue, London | - | 65 m² | - |
| Flat 40, Sidlaw House, Portland Avenue, London | - | 54 m² | - |
| Flat 42, Sidlaw House, Portland Avenue, London | Leasehold | 65 m² | £425,000 (2016) |
| Flat 43, Sidlaw House, Portland Avenue, London | Leasehold | 51 m² | £52,500 (1999) |
| Flat 44, Sidlaw House, Portland Avenue, London | - | 74 m² | - |
| Flat 45, Sidlaw House, Portland Avenue, London | - | 42 m² | - |
| Flat 47, Sidlaw House, Portland Avenue, London | - | 80 m² | - |
